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10.) the presence of stromatolites indicate that shallow seas covered much of earth during intervals in this period.
11.) Nearly half of the valuable mineral deposits in the world occur in the rocks of this period -
Geological Timescale
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22.) Trilobites appear
23.) Shelled brachiopods appear -
1.) There is very little plant life during this period
30.) Colonies of tiny invertebrates call grapolites florished and vertibrates appear, fish did not have jaws or teeth and their bodies were covered with bony plates. -
24.) Eurypterids (sea scorpions), sea stars and coral become more common.
33.)Vascular land plants and animals, such as scorpions begin ti evolve on land. -
31.) Huge plants begin to develop, early amphibians form.
37.) Age of fishes, fish that can breathe out of the water and spend time on land form. -
2.) Swamps and forests cover the land
21.)Early reptiles resembling large lizards appear. -
4.) Giant Cockroaches appear.
15.) Coal deposits form -
8.) Appalachian Mountains are created because of the collision of techtonic plates and savanas form.
38.) Enviromental change causes mass extinction of sea invertibrates (Trilobites & europterids) as the seas retreat. -
16.) Welcome to the world of the Dinosaur! Enter the squirrel-sized dinosaur and the first forest dwelling mammals appear.
34.) Inchthyosaurs are living in the ocean, new invertebrates call ammonite develop. -
3.) Flying reptiles called pterosaurs are in the air now.
13.) Whoa, those dinos are getting big and dominate the land- Lizard-hipped and bird-hipped appear - carnivores and herbivores, have arrived. -
5.) First flowered plant appears.
35.) Impact hypothesis-dinosaur mass extinction. -
12.) First primates evolved.
29.) Small todents evolve. -
17.) flying squirrels, whales and bats appear.
25.) Worldwide temperatures drop about 4 degrees celsius (39.2 Fahrenheit) -
5.) The Himalayas develop due to uplifting, caused by the Indian subcontinent and Eurasian continents colliding.
27.)Many early mammals gbecome extinct, clams and snails flourish. -
32.) Antartica caps begin to form.
36.) Mediterransean sea dries up and refills several times due to tectonic forcesa dn dropping sea levels. -
18.) Various species migrated between continents across land bridges.
26.)First horces appear. -
9.) homo Sapien (modern humans) appeared and are hunters.
20.) Species that didnot evolve to survive extreme cold moved to warmer climates areas or became extinct (direwolf and giant ground sloth) -
19.) The last glacial period ended and sea levels rose, Great Lakes formed.
28.) Modern human developed agriculture and used tools made of bronze and iron. -
7.) Some scientist believe that human kind has caused mass extinctions of plant and animal species, polluted the oceans and altered the atmosphere.
14.P) There is an argument as to when this epoch began, some scientist think it began with the industrial age in the early 1800's others think it began with the atomic age in the 1950's.
